This patch makes GPIO pin to INTERRUPT mode or INPUT mode according
to bitmap_gpio_int. When the related bit of bitmap_gpio_int is set,
it makes GPIO pin to INTERRUPT mode instrad of INPUT mode in the
samsung_gpiolib_4bit_input function.
Signed-off-by: Eunki Kim <eunki_kim@xxxxxxxxxxx>
Cc: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
---
drivers/gpio/gpio-samsung.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
index ba126cc..19caef4 100644
--- a/drivers/gpio/gpio-samsung.c
+++ b/drivers/gpio/gpio-samsung.c
@@ -596,7 +596,10 @@ static int samsung_gpiolib_4bit_input(struct gpio_chip *chip,
unsigned long con;
con = __raw_readl(base + GPIOCON_OFF);
- con &= ~(0xf << con_4bit_shift(offset));
+ if (ourchip->bitmap_gpio_int & BIT(offset))
+ con |= 0xf << con_4bit_shift(offset);
+ else
+ con &= ~(0xf << con_4bit_shift(offset));
__raw_writel(con, base + GPIOCON_OFF);
gpio_dbg("%s: %p: CON now %08lx\n", __func__, base, con);
@@ -1018,6 +1021,8 @@ static void __init samsung_gpiolib_add_4bit_chips(struct samsung_gpio_chip
*chip
if ((base != NULL) && (chip->base == NULL))
chip->base = base + ((i) * 0x20);
+ chip->bitmap_gpio_int = 0;
+
samsung_gpiolib_add(chip);
}
}
--
1.7.1
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